/*------------头部--------------*/
/*.top{*/
/*    !*border: 1px solid red;*!*/
/*    margin-bottom: 30px;*/
/*}*/
.top > div:nth-child(1) > div{
    width: 1200px;
    height: 70px;
    /*border: 1px solid blue;*/
}
.top > div:nth-child(1) > div > div:nth-child(1){
    /*border: 1px solid green;*/
    background-image: url("../img/logo_cu9u.png");
    background-size: 100% 100%;
    width: 239px;
    height: 40px;
    cursor: pointer;
}
.top > div:nth-child(1) > div > div:nth-child(2){
    width: 550px;
    /*border: 1px solid green;*/
}
.top > div:nth-child(1) > div > div:nth-child(2) > div{
    width: 80px;
    line-height: 50px;
    font-size: 15px;
    display: flex;
    justify-content: center;
    color: black;
    margin: 0 5px;
}
.top > div:nth-child(1) > div > div:nth-child(2) > div:hover{
    color: red;
    cursor: pointer;
}
.top > div:nth-child(1) > div > div:nth-child(3){
    width: 300px;
    /*border: 1px solid green;*/
    color: gray;
    line-height: 50px;
    font-size: 15px;
}
.top > div:nth-child(2){
    background-image: url("../img/banner_g6ii.jpg");
    background-size: 100% 100%;
    /*width: 1920px;*/
    /*height: 650px;*/
    width: 1500px;
    height: calc(1500 * 650px /1920);
}
.top > div:nth-child(2) > div {
    width: 700px;
    /*border: 1px solid green;*/
}
.top > div:nth-child(2) > div > div{
    margin: 5px 0;
}
.top > div:nth-child(2) > div > div:nth-child(1) , .top > div:nth-child(2) > div > div:nth-child(4) , .top > div:nth-child(2) > div > div:nth-child(5){
    color: gray;
    font-size: 15px;
}
.top > div:nth-child(2) > div > div:nth-child(2){
    font-size: 20px;
}
.top > div:nth-child(2) > div > div:nth-child(3){
    color: orange;
    font-size: 30px;
}
.top > div:nth-child(2) > div > div:nth-child(6) > div{
    font-size: 17px;
    padding: 5px 5px;
    background-color: orange;
    width: 150px;
    margin: 10px 0;
    color: white;
}
.top > div:nth-child(2) > div > div:nth-child(6) > div:hover{
    background-color: red;
    cursor: pointer;
}